Drinking water in 4207 (Switzerland)
One supply zone, water supplier: Gemeindeverwaltung Bretzwil, Wasserversorgung.
The values come from the SVGW platform trinkwasser.ch. Water utilities report there voluntarily; the SVGW does not verify the data. For each parameter, the minimum, maximum, average and median of one year are published; hardness in French degrees (°fH). On 20 August 2026 the SVGW objected in writing to the use of this data for maunawai.info: we do not show values from this source, but only name the parameters measured there. Analyses we obtained directly from the water supplier are shown in full.
How to read the share of the parametric value
Several samples per year: for chemical parameters the mean value is given, for microbiological ones the highest measured value. There the parametric value is zero — a single finding would disappear in the average, and it is precisely that finding which is the information. Which reference applies is stated in the last column of the table.
Netzwasser Brunnen Eintracht (19602-74, 2812, Trinkwasser behandelt im Verteilnetz)
Gemeindeverwaltung Bretzwil, WasserversorgungAssigned via the water supplier — the exact supply zone boundary within the postcode is not yet linked.
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| Sum of PFAS | <0.020 µg/l below limit of quantification | — | — | Single value |
Show all recorded parameters (25 — most recent value per parameter)
PFAS (25)
| Parameter | Value | Parametric value | Share of the parametric value | Reference |
|---|---|---|---|---|
| N-EtFOSAA | <0.001 µg/l below limit of quantification | — | — | Single value |
| N-MeFOSAA | <0.001 µg/l below limit of quantification | — | — | Single value |
| Perfluorobutane sulfonic acid (PFBS) | <0.001 µg/l below limit of quantification | — | — | Single value |
| Perfluorobutanoic acid (PFBA) | <0.001 µg/l below limit of quantification | — | — | Single value |
| Perfluorodecane sulfonic acid (PFDS) | <0.001 µg/l below limit of quantification | — | — | Single value |
| Perfluorodecanoic acid (PFDA) | <0.001 µg/l below limit of quantification | — | — | Single value |
| Perfluorododecane sulfonic acid (PFDoDS) | <0.001 µg/l below limit of quantification | — | — | Single value |
| Perfluorododecanoic acid (PFDoDA) | <0.001 µg/l below limit of quantification | — | — | Single value |
| Perfluoroheptane sulfonic acid (PFHpS) | <0.001 µg/l below limit of quantification | — | — | Single value |
| Perfluoroheptanoic acid (PFHpA) | <0.001 µg/l below limit of quantification | — | — | Single value |
| Perfluorohexane sulfonic acid (PFHxS) | <0.001 µg/l below limit of quantification | 0.3 µg/l | < 0.3 % * | Single value |
| Perfluorohexanoic acid (PFHxA) | <0.001 µg/l below limit of quantification | — | — | Single value |
| Perfluorononane sulfonic acid (PFNS) | <0.001 µg/l below limit of quantification | — | — | Single value |
| Perfluorononanoic acid (PFNA) | <0.001 µg/l below limit of quantification | — | — | Single value |
| Perfluorooctanesulfonic acid (PFOS) | <0.001 µg/l below limit of quantification | 0.3 µg/l | < 0.3 % * | Single value |
| Perfluorooctanoic acid (PFOA) | <0.001 µg/l below limit of quantification | 0.5 µg/l | < 0.2 % * | Single value |
| Perfluoropentanesulfonic acid (PFPeS) | <0.001 µg/l below limit of quantification | — | — | Single value |
| Perfluoropentanoic acid (PFPeA) | <0.001 µg/l below limit of quantification | — | — | Single value |
| Perfluorotridecanesulfonic acid (PFTrDS) | <0.001 µg/l below limit of quantification | — | — | Single value |
| Perfluorotridecanoic acid (PFTrDA) | <0.001 µg/l below limit of quantification | — | — | Single value |
| Perfluoroundecanesulfonic acid (PFUnDS) | <0.001 µg/l below limit of quantification | — | — | Single value |
| Perfluoroundecanoic acid (PFUnDA) | <0.001 µg/l below limit of quantification | — | — | Single value |
| Sum of 4 PFAS | <0.004 µg/l below limit of quantification | — | — | Single value |
| Sum of PFAS | <0.020 µg/l below limit of quantification | — | — | Single value |
| Trifluoroacetic acid (TFA) | 0.77 µg/l | — | — | Single value |
* Value below the limit of quantification: the actual share of the parametric value is not known; it lies somewhere below the stated upper bound. The marker shows where the limit of quantification of the measurement lies relative to the parametric value.
Values taken unchanged from the publications linked below — for each parameter the most recent recorded value. „—" in the parametric value column: no currently valid legal parametric value is stored in our database for this parameter; the parameter register with all parametric values is being expanded continuously.
Frequent questions about postcode 4207
- Who supplies the drinking water in Postcode 4207?
- Gemeindeverwaltung Bretzwil, Wasserversorgung. The values shown here come from the supply zone Netzwasser Brunnen Eintracht (19602-74, 2812, Trinkwasser behandelt im Verteilnetz) and apply to the water the supplier delivers. What happens between the building connection and the tap — in old lead pipes, for example — is not covered by these analyses; information on that is provided by owners, the health authority or an examination by an accredited laboratory.
General questions — how current the data is, limit of quantification, parametric values, who is behind this site — are answered under Questions & answers.